On 22 July your 0442 ZT DR position is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified star bearing 112°T, at an observed altitude (Ho) of 44°16.0'. The chronometer reads 05h 39m 03s and is 03m 14s slow. What star did you observe?

Correct Answer: Option A — Menkar

Convert chronometer time to GMT. Extract GHA Aries and SHA from the Nautical Almanac to determine the star's LHA and Declination. Comparing these values against the star list for 22 July confirms Menkar, as its celestial coordinates match the observed altitude and bearing at the DR position.